Request a Call

We encourage you to read our
privacy and cookies policy.

Find new business leads quickly and easily with access to information on all UK construction activity

Hello, my name is
I work at as a
I'd like to
You can contact me via email at
or call me on

We may email you from time to time with updates and other information about our products and services that may be of interest. You can unsubscribe at any time. See our privacy and cookies policies here.

Overall, the top 10 construction companies in Wales won £815 million-worth of work in the last 12 months according to Glenigan data.

The top 10 construction companies in Wales league table ranks the top 10 best performing contractors by the total value of projects won over the past 12 months and identifies the number of projects each contractor was awarded.

The table reflects activity in Clwyd, Dyfed, Gwent, Gwynedd, Mid Glamorgan, Powys, South Glamorgan and West Glamorgan.

This league table, together with our other regional league tables, are regularly updated, so check back again to see which construction companies in Wales are winning the most work.

The top 10 construction companies in Wales

United Kingdom

Position Contractor Number of Projects Value of Projects (£m) Projects
1 CRH  20  175 See all projects
2 Morgan Sindall Group  8  166 See all projects
3 Kier Group  13  104 See all projects
4 Willmott Dixon Holdings  9  80 See all projects
5 C.Wynne & Sons  13  72 See all projects
6 Bouygues UK  1  70 See all projects
7 John Weaver  13  39 See all projects
8 Brenig Construction  2  39 See all projects
9 Read Construction  6  38 See all projects
10 Andrew Scott  4  32 See all projects
To see the top 10 contractors for each region of the UK, together with the top 50 contractors and clients, and the top 20 architects, engineers, and surveyors, nationally, please download the full Glenigan League Tables here.